Drawer sliding rail

Abstract

The utility model relates to a drawer sliding rail which comprises an outer rail, a middle rail, a buffer block and an inner rail. A first sliding groove is formed in the outer rail; the middle rail is arranged in the first sliding groove in a sliding mode, and a second sliding groove is formed in the middle rail. The buffer block is arranged in the first sliding groove and located on the outer side of the middle rail, the buffer block is installed on the outer rail, and locking grooves are formed in the upper end face and the lower end face of the buffer block. The inner rail is arranged in the second sliding groove in a sliding mode, the inner rail comprises a fixing plate and two vertical plates arranged on the two sides of the fixing plate, and locking blocks matched with the locking grooves are formed on the opposite faces of the two vertical plates; when the middle rail and the inner rail are in a retracted state, one end of the middle rail abuts against the buffer block, and the locking block of the inner rail is embedded into the corresponding locking groove. Self-locking of the drawer is achieved, the situation that children open the drawer by mistake is reduced, and potential safety hazards are eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware accessories, in particular to a drawer slide rail. Background Art

[0002] Slide rails, also known as guide rails or runners, are hardware accessories fixed to furniture drawers to allow the cabinet or panel to move in and out. They are suitable for connecting wooden or steel cabinets, such as cabinets, furniture, document cabinets, and bathroom cabinets. Slide rails are mainly divided into roller slides, steel ball slides, gear slides, and damping slides.

[0003] The drawer is fixed on the inner rail, and the outer rail is fixed on the cabinet panel, so as to realize the sliding connection between the drawer and the cabinet panel, thereby realizing the pulling out or retracting of the drawer. In order to reduce the impact force between the inner rail, the middle rail and the outer rail during the retraction of the drawer, a buffer component is usually provided on the slide rail. For example, the "A Clamping Block and Drawer Slide Assembly" disclosed in Chinese Patent Publication No. CN112890475B provides a clamping block at the end of the outer rail so that the inner rail and the middle rail can abut against the clamping block when they are retracted. The clamping block provides a buffer force for the inner rail and the middle rail, thereby improving the overall service life of the slide rail. However, there is still a problem with this type of slide rail assembly at present, that is, the resistance of the slide rail is small, and young children can easily open the drawer, but the edges and corners of the drawer are relatively sharp. If young children open the drawer at will, there is a great safety hazard.

[0004] Therefore, it is necessary to provide a technical solution to solve this problem. Utility Model Content

[0005] Aiming at the problem in the prior art that young children are prone to accidentally opening drawers, the utility model provides a drawer slide rail, comprising an outer rail, a middle rail, a buffer block and an inner rail;

[0006] The outer rail is provided with a first sliding groove;

[0007] The middle rail is slidably arranged in the first sliding groove, and a second sliding groove is provided on the middle rail;

[0008] The buffer block is arranged in the first slide groove and is located on the outer side of the middle rail. The buffer block is installed on the outer rail. The upper end surface and the lower end surface of the buffer block are both provided with locking grooves;

[0009] The inner rail is slidably disposed in the second sliding groove, and the inner rail includes a fixed plate and two vertical plates disposed on both sides of the fixed plate, and locking blocks adapted to the locking grooves are formed on opposite surfaces of the two vertical plates;

[0010] Wherein, when the middle rail and the inner rail are in the retracted state, one end of the middle rail abuts against the buffer block, and the locking block of the inner rail is embedded in the corresponding locking groove.

[0011] In some embodiments, at least one side wall of the locking groove is arc-shaped or inclined.

[0012] In some embodiments, metal plates are mounted on both the upper and lower end surfaces of the buffer block, and the locking groove is formed on the metal plates.

[0013] In some embodiments, a slot is provided on the buffer block, and an inserting plate is provided on the outer rail, and the inserting plate is inserted into the slot to connect the buffer block to the outer rail.

[0014] In some embodiments, a buffer groove is formed on the buffer block, and the buffer groove is located on a side of the slot close to the middle rail.

[0015] In some embodiments, a side of the buffer block close to the inner rail is provided with a curved surface or a slope.

[0016] In some embodiments, a limit block is provided at one end of the middle rail away from the buffer block, and the limit block is installed in the second slide groove; a baffle is formed at one end of the inner rail away from the buffer block; when the middle rail and the inner rail are in a retracted state, the baffle rests on the limit block.

[0017] In some embodiments, the limiting block is provided with a first stopping portion.

[0018] The inner rail is provided with a second stopper, the second stopper being hinged to the inner rail via a pivot, and the second stopper and the first stopper being matched with each other;

[0019] When the second stopping portion is misaligned with the first stopping portion, the second stopping portion can be separated from the limiting block; when the second stopping portion cooperates with the first stopping portion to stop, the inner rail cannot be separated from the middle rail.

[0020] In some embodiments, both the inner rail and the outer rail are provided with pre-positioning portions.

[0021] In some embodiments, the cross-section of the pre-positioning portion is triangular.

[0022] Compared with the prior art, the drawer slide rail of the present invention has the following advantages:

[0023] The utility model adds a locking block and a locking groove; when the drawer is fully retracted, the locking block can be embedded in the locking groove, so that a relative locking force can be generated between the inner rail and the outer rail, thereby making the drawer achieve a self-locking effect. In this way, young children will not be able to open the drawer at will due to insufficient strength, thereby minimizing safety hazards. Adults only need to apply a large pulling force to the drawer to deform the buffer block so that the locking block can be disengaged from the locking groove, thereby realizing the opening of the drawer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a drawer slide rail in an expanded state involved in the present utility model;

[0025] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0026] Figure 3 This is a structural schematic diagram of a drawer slide rail involved in the present invention in an expanded state from another perspective;

[0027] Figure 4 This is a structural diagram of a drawer slide rail in a retracted state according to the present invention;

[0028] Figure 5 This is a schematic diagram of the connection between the outer rail and the middle rail of a drawer slide rail involved in the present utility model;

[0029] Figure 6 for Figure 5 A magnified schematic diagram of point B in the middle;

[0030] Figure 7 for Figure 5 The enlarged schematic diagram of point C in the middle;

[0031] Figure 8 This is a structural diagram of a buffer block in a drawer slide rail involved in the present utility model;

[0032] Figure 9 This is a structural diagram of an inner rail in a drawer slide rail involved in the present utility model;

[0033] Figure 10 for Figure 9 Enlarged schematic diagram of point D in the middle.

[0034] Reference numerals:

[0035] 1. Outer rail; 2. Middle rail; 3. Buffer block; 4. Inner rail;

[0036] 11. First chute; 12. Insert plate; 13. Reinforcement portion; 14. Pre-positioning portion;

[0037] 21. Second chute; 22. Limit block; 221. First stopper;

[0038] 31. Locking groove; 32. Metal plate; 33. Slot; 34. Buffer groove;

[0039] 41. Fixed plate; 42. Vertical plate; 43. Locking block; 44. Baffle; 45. Second stopping portion. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time; when an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0043] In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] In view of the problem in the prior art that young children are prone to accidentally opening drawers, this embodiment provides a drawer slide rail, such as Figures 1-10 As shown, the drawer slide includes an outer rail 1, a middle rail 2, a buffer block 3 and an inner rail 4;

[0045] The outer rail 1 is provided with a first slide groove 11; the middle rail 2 is slidably arranged in the first slide groove 11, and the middle rail 2 is provided with a second slide groove 21; the buffer block 3 is arranged in the first slide groove 11 and is located on the outside of the middle rail 2, and the buffer block 3 is installed on the outer rail 1, and the upper end face and the lower end face of the buffer block 3 are provided with locking grooves 31; the inner rail 4 is slidably arranged in the second slide groove 21, and the inner rail 4 includes a fixed plate 41 and two vertical plates 42 arranged on both sides of the fixed plate 41, and the opposite surfaces of the two vertical plates 42 are formed with locking blocks 43 that are compatible with the locking grooves 31; wherein, when the middle rail 2 and the inner rail 4 are in the retracted state, one end of the middle rail 2 rests on the buffer block 3, and the locking block 43 of the inner rail 4 is embedded in the corresponding locking groove 31. It should be noted that the assembly method of the outer rail 1, the middle rail 2 and the inner rail 4 is the existing technology, so a detailed description of the structure is not given here.

[0046] In this embodiment, the user can achieve the movement of the inner rail 4 and the middle rail 2 by applying a pushing force to the drawer, thereby achieving the effect of retracting the drawer. Because the buffer block 3 is elastic, the middle rail 2 or the inner rail 4 can achieve a buffering effect when contacting the buffer block 3, reducing the impact force on the middle rail 2, the inner rail 4 or the drawer, thereby reducing the risk of damage to the slide rail or the drawer; in addition, when the user further applies force to the drawer to make the locking block 43 embedded in the locking groove 31, a relative locking force can be generated between the inner rail 4 and the outer rail 1, so that the drawer can achieve a self-locking effect. In this way, young children will not be able to open the drawer at will due to lack of strength, thereby minimizing safety hazards, and adults only need to apply a large pulling force to the drawer to deform the buffer block 3 to make the locking block 43 disengage from the locking groove 31, thereby achieving the opening of the drawer.

[0047] In some embodiments, at least one side wall of the locking groove 31 is arc-shaped or inclined; thus, when the user applies a pulling force to the drawer, the buffer block 3 can elastically deform more smoothly under the action of the arc-shaped or inclined wall of the locking groove 31, so that the locking block 43 can be smoothly disengaged from the locking groove 31.

[0048] It is understood that the buffer block 3 is made of a synthetic resin such as silicone or rubber, and when the locking block 43 acts on the buffer block 3, the force applied to the buffer block 3 is concentrated, which can easily damage the buffer block 3. Therefore, in some embodiments, a metal plate 32 is mounted on both the upper and lower end surfaces of the buffer block 3, and the locking groove 31 is formed on the metal plate 32. In this way, the locking block 43 can first apply force to the metal plate 32, and the pressure exerted on the metal plate 32 then acts on the buffer block 3, so that the force on the surface of the buffer block 3 is evenly distributed, which can significantly reduce the risk of damage to the buffer block 3.

[0049] In some embodiments, a slot 33 is formed on the buffer block 3, and an insert plate 12 is provided on the outer rail 1. The insert plate 12 is inserted into the slot 33 to connect the buffer block 3 to the outer rail 1. This design can improve the ease of assembly and disassembly between the buffer block 3 and the outer rail 1, not only improving the production efficiency of the slide rail, but also facilitating replacement of the buffer block 3 if it is damaged.

[0050] In some embodiments, the buffer block 3 is provided with a buffer groove 34, which is located on the side of the slot 33 near the middle rail 2. The buffer groove 34 can be a slot structure formed on the buffer block 3, or a gap structure that passes through the buffer block 3. The provision of the buffer groove 34 forms a deformed portion on the side of the buffer block 3 near the middle rail 2, which is used to absorb kinetic energy from the end of the middle rail 2 to achieve a braking effect.

[0051] In some embodiments, the side of the buffer block 3 adjacent to the inner rail 4 is provided with a curved or inclined surface. It is understood that when the drawer is fully retracted, the locking block 43 will first contact the curved or inclined surface, gradually compressing the buffer block 3 until the position of the locking block 43 corresponds to the position of the locking groove 31. The buffer block 3 then returns to its original position, allowing the locking block 43 to fit into the locking groove 31. Furthermore, the metal plate 32 covers the curved or inclined surface.

[0052] In some embodiments, a stop block 22 is provided at the end of the middle rail 2 away from the buffer block 3, and the stop block 22 is mounted in the second chute 21. A baffle 44 is formed at the end of the inner rail 4 away from the buffer block 3. When the middle rail 2 and inner rail 4 are retracted, the baffle 44 abuts against the stop block 22. The stop block 22 is elastic or includes an elastic structure. When one end of the inner rail 4 contacts the buffer block 3 to produce a buffering effect, the other end of the inner rail 4 also contacts the stop block 22 to produce a buffering effect. With the double-layer buffering effect, the risk of damage to the inner rail 4 can be greatly reduced.

[0053] In some embodiments, the limit block 22 is provided with a first stopper 221, and the inner rail 4 is provided with a second stopper 45. The second stopper 45 is hinged to the inner rail 4 via a pivot, and the second stopper 45 and the first stopper 221 are arranged to match each other. When the second stopper 45 and the first stopper 221 are misaligned, the second stopper 45 can be separated from the limit block 22. When the second stopper 45 and the first stopper 221 are locked together, the inner rail 4 cannot be separated from the middle rail 2. This design facilitates the user to disassemble and assemble the inner rail 4 and the middle rail 2, thereby improving the assembly efficiency of the drawer and the cabinet.

[0054] In some embodiments, both the inner rail 4 and the outer rail 1 are provided with a pre-positioning portion 14. Taking the inner rail 4 as an example, when installing the inner rail 4, the installer can first apply a certain amount of pressure to the inner rail 4, causing the pre-positioning portion 14 to penetrate the side of the drawer, thereby pre-positioning the inner rail 4. In this way, the risk of the inner rail 4 shifting during the locking process is greatly reduced, ensuring that the inner rail 4 can be locked in the preset position of the drawer, improving the installation quality of the inner rail 4. In addition, after the pre-positioning portion 14 of the inner rail 4 penetrates the side of the drawer, the installer only needs to apply a small amount of pressure to the inner rail 4 to fix the inner rail 4 to the drawer, making the installation of the inner rail 4 more labor-saving and reducing the difficulty of installation of the inner rail 4. The installation of the outer rail 1 is similar and will not be described in detail here. Preferably, the cross-section of the pre-positioning portion 14 is triangular, so that the pre-positioning portion 14 can easily penetrate the drawer or cabinet. Of course, the pre-positioning portion 14 can also have other structures, which are not limited here.

[0055] In some embodiments, the inner rail 4, the middle rail 2 and the outer rail 1 are all provided with a reinforcement portion 13 formed by stamping; the addition of the reinforcement portion 13 can improve the bending resistance, tensile strength and other properties of the inner rail 4 or the middle rail 2 or the outer rail 1, thereby extending the service life of the slide rail.

[0056] The above description is only a preferred embodiment of the present invention, and its structure is not limited to the shapes listed above. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drawer slide, characterized in that: include: an outer rail, wherein a first sliding groove is provided on the outer rail; a middle rail, the middle rail being slidably disposed in the first sliding groove, and the middle rail being provided with a second sliding groove; A buffer block is provided in the first slide groove and is located outside the middle rail. The buffer block is mounted on the outer rail, and locking grooves are provided on the upper and lower end surfaces of the buffer block. an inner rail slidably disposed in the second slide groove, the inner rail comprising a fixed plate and two vertical plates disposed on both sides of the fixed plate, wherein locking blocks adapted to the locking grooves are formed on opposing surfaces of the two vertical plates; Wherein, when the middle rail and the inner rail are in the retracted state, one end of the middle rail abuts against the buffer block, and the locking block of the inner rail is embedded in the corresponding locking groove.

2. A drawer slide according to claim 1, characterized in that: At least one side wall of the locking groove is arc-shaped or inclined.

3. The drawer slide according to claim 1, characterized in that: Metal plates are installed on the upper end surface and the lower end surface of the buffer block, and the locking groove is formed on the metal plates.

4. The drawer slide according to claim 1, characterized in that: A slot is provided on the buffer block, and an inserting plate is provided on the outer rail. The inserting plate is inserted into the slot to connect the buffer block with the outer rail.

5. The drawer slide according to claim 4, characterized in that: The buffer block is provided with a buffer groove, and the buffer groove is located on a side of the slot close to the middle rail.

6. The drawer slide according to claim 1, characterized in that: A side of the buffer block close to the inner rail is provided with a curved surface or an inclined surface.

7. The drawer slide according to claim 1, characterized in that: A limit block is provided at one end of the middle rail away from the buffer block, and the limit block is installed in the second chute; a baffle is formed at one end of the inner rail away from the buffer block; When the middle rail and the inner rail are in the retracted state, the baffle rests on the limiting block.

8. The drawer slide according to claim 7, characterized in that: The limit block is provided with a first stopper. The inner rail is provided with a second stopper, the second stopper being hinged to the inner rail via a pivot, and the second stopper and the first stopper being matched with each other; When the second stopping portion is misaligned with the first stopping portion, the second stopping portion can be separated from the limiting block; when the second stopping portion cooperates with the first stopping portion to stop, the inner rail cannot be separated from the middle rail.

9. The drawer slide according to claim 1, characterized in that: The inner rail and the outer rail are both provided with pre-positioning parts.

10. The drawer slide according to claim 9, characterized in that: The cross section of the pre-positioning portion is triangular.

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